Needs another relay, of course.John Hasler wrote:I need to do this.
Improvement: wire an aux contact on the pressure switch (add a relay if needed) to reset the timer when the compressor is actually running. That way it will never shut off while you using enough air that the compressor is never idle for 20 minutes.
Compressor woes
-
- Posts: 1852
- Joined: Tue Dec 06, 2016 4:05 pm
- Location: Elmwood, Wisconsin
Re: Compressor woes
- Bill Shields
- Posts: 10589
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: Compressor woes
I see it as the same problem...no matter how many relays you add...
if you have an air leak and the compressor is running, your relay will THINK you still need air -> the compressor will never shut off -> and you are back to square one..
if you have an air leak and the compressor is running, your relay will THINK you still need air -> the compressor will never shut off -> and you are back to square one..
Too many things going on to bother listing them.
-
- Posts: 1852
- Joined: Tue Dec 06, 2016 4:05 pm
- Location: Elmwood, Wisconsin
Re: Compressor woes
I just meant to clarify that a relay is needed to implement my suggestion. To avoid the leak problem requires yet another timer function or perhaps a flow switch.
This is rapidly reaching the point where the simplest solution would be a microcontroller and some solid-state relays. Not worth it.
This is rapidly reaching the point where the simplest solution would be a microcontroller and some solid-state relays. Not worth it.
- Bill Shields
- Posts: 10589
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: Compressor woes
Then you get into 'is it a leak or the shot blast booth running with is essentially a FULL OPEN LINE anyway"?
I have the ultimate micro-controller...my brain and a push button.
sometimes the simplest solution is the easiest...and with my brain involved...SIMPLE is the key word. giggle
I have the ultimate micro-controller...my brain and a push button.
sometimes the simplest solution is the easiest...and with my brain involved...SIMPLE is the key word. giggle
Too many things going on to bother listing them.
-
- Posts: 1852
- Joined: Tue Dec 06, 2016 4:05 pm
- Location: Elmwood, Wisconsin
Re: Compressor woes
> Then you get into 'is it a leak or the shot blast booth running with is essentially a FULL OPEN LINE anyway"?
A flow switch feature would shut the system down only after perhaps an hour of continuous flow. It would reset on very brief cessations of flow.
While we're at it we might as well add a solinoid valve to cycle the drain valve every X hours of compressor operation. Might be worth it in a big shop.
A flow switch feature would shut the system down only after perhaps an hour of continuous flow. It would reset on very brief cessations of flow.
While we're at it we might as well add a solinoid valve to cycle the drain valve every X hours of compressor operation. Might be worth it in a big shop.
- Bill Shields
- Posts: 10589
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: Compressor woes
you have now spent more $$$ on a control system than I did on the air compressor.....
Too many things going on to bother listing them.
-
- Posts: 1852
- Joined: Tue Dec 06, 2016 4:05 pm
- Location: Elmwood, Wisconsin
Re: Compressor woes
Bill Shields wrote:you have now spent more $$$ on a control system than I did on the air compressor.....
I think I'd have to buy the flow switch and the solenoid valve. Everything else I have (in the form of junk, mostly). Of course, it *would* cost me about a hundred hours of my time...
- Bill Shields
- Posts: 10589
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: Compressor woes
with the motor starter and the timer, I am at the cost of the compressor and the 100 hours of time needs to go into the steamer (giggle)....
Too many things going on to bother listing them.